Question

What is fraction of a day is 8 hour ?

Answer 1

The fraction is obvoiusly one third. The real problem here is how you handle units, which you'll need to do in science and engineering calculations. Read on!

Explanation:

This is a problem that tests tour ability to carry units through your calculations.

Here you start with

`8color(red)("hr")`

Now you multiply this by a fraction that matches hours to days:

`8color(red)("hr")×{1color(blue)("d")}/{24color(red)("hr")}`

And note that the hour units, given in red, cancel out. So when you do the mathematical operation of multiplication you also convert the units to what you want:

`8color(red)(cancel("hr"))×{1color(blue)("d")}/{24color(red)(cancel("hr"))}=(1/3)color(blue)("d")`